Answer:
ice melting
Explanation:
Because once it melts you can change it back to ice.
Repeat the experiment to make sure it gives the same results.
Hope i helped ; )
Answer:
The greater weight increases the terminal velocity by acting as an extra force against gravity and air resistance.
The answer would be option D "a ball sitting on a shelf." Potential energy is the amount of energy a object has while it's at rest.. (or not moving) Kinetic energy is how much energy a object is while it's moving. So in this case it's option D because a ball sitting on a shelf isn't moving therefore it has potential energy. It's not option A because thats a example of kinetic energy since how the roller coaster is moving. It's not option B because it's kinetic energy because the bike is moving. It's also not option C because it's kinetic energy because the bird is moving.
Hope this helps!
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I believe this is right but double check to make sure :)
